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MOTION SENSING LIGHT TEARDOWN

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Page 1: Power to circuit board Ground Positive Neutral We opened the back end of the fixture to expose the AC wiring

MOTION SENSING LIGHT TEARDOWN

Page 2: Power to circuit board Ground Positive Neutral We opened the back end of the fixture to expose the AC wiring

WIRING

Power to circuit board

Ground

Positive

Neutral

We opened the back end of the fixture to expose the AC wiring.

Page 3: Power to circuit board Ground Positive Neutral We opened the back end of the fixture to expose the AC wiring

CLOSE UP VIEW OF WIRING

Page 4: Power to circuit board Ground Positive Neutral We opened the back end of the fixture to expose the AC wiring

ADDING MANUAL TOGGLE SWITCH

On/Off switch

Positive

Neutral

Ground

For our experimentation purposes we broke out the wiring in order to measure voltage and current.

Page 5: Power to circuit board Ground Positive Neutral We opened the back end of the fixture to expose the AC wiring

POSITIVE, NEUTRAL AND GROUND WIRING FOR LIGHTS

Power to circuit board

Added wiring from power supply on back of circuit board to manual toggle switch

120V, 60Hz, 4.2A UL listing

Neutral to lights

Positive to lights

This is the sensor circuit board.

Page 6: Power to circuit board Ground Positive Neutral We opened the back end of the fixture to expose the AC wiring

FRONT OF CIRCUIT BOARD

Photo resistor

ControllerInfrared motion sensor

Relay

CapacitorsWiring added to power supply for on/off toggle

Timer circuitry

Infrared light impinges the sensor through a diffuser lens. Changes are interpreted as motion.

Page 7: Power to circuit board Ground Positive Neutral We opened the back end of the fixture to expose the AC wiring

MEASURING VOLTAGE AND CURRENT ON CFLMANUAL TOGGLE IN OFF

POSITIONMANUAL TOGGLE ON

POSITION

14W - .23A (listed on bulb)

116.5 volts 232 mA current

With our breakout box we can measure differences between incandescent, CFL and LED bulb performance.


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